Flash point solids

TRICHLORACETIC ACID (76-03-9) C2HCI3O2 Combustible liquid [flash point (solid material) >230°F/>110°C]. Generally stable if moisture is not present in elevated temperatures, this material, combined with H2O forms HCl and deadly phosgene gases. The aqueous solution is a strong acid. Incompatible wifli sulfuric acid, bases, ammonia, amines, dimethyl sulfoxide, iso-... 

Two common flash-point solids are camphor and paradichlorobenzene, also known as mothballs or flakes. Mothballs are placed in areas where clothing is stored to prevent moths from doing damage to the clothing. The fact that the mothballs are flash-point solids allows them to pass from a solid to a vapor without becoming a liquid. Because of this feature, the vapor from the mothballs repels the moths without harming the clothing. 

Chapter 6 Flammable Solids Class 4.1 Flammable Solids Flash-Point Solids/Snblimation Combnstible Dnsts Class 4.2 Spontaneons Combnstibles Spontaneons Ignition Pyrophoric Solids and Liqnids Incidents... 

Carbon disulphide should never be used if any alternative solvent is available, as it has a dangerously low flash-point, and its vapours form exceedingly explosive mixtures with air. Ether as a solvent for recrystallisation is much safer than carbon disulphide, but again should be avoided whenever possible, partly on account of the danger of fires, and partly because the filtered solution tends to creep up the walls of the containing vessel and there deposit solid matter by complete evaporation instead of preferential crystallisation. 

Volatile Solids, NFPA 325, Quincy, Mass.). Pressure particularly affects flash point and the uppei flammable limit (UFL) see later section entitled Effect of Temperature, Pressure, and Owgen. Mists of high-flash-point liquids may be flammable the lowei flammable limit (LFL) of fine mists and accompanying vapor is about 48 g/m of air, basis 0°C and 1 atm (0.048 oz/fP). 

Small concentrations of volatile components in a liquid mixture may accumulate in the vapor space of a container over time and appreciably reduce the flash point relative to the reported closed-cup value. This may be the result of degassing, chemical reaction or other mechanism. An example is bitumen [162]. Similarly, if a tank truck is not cleaned between deliveries of gasoline and a high flash point liquid such as kerosene or diesel oil, the mixture might generate a flammable atmosphere both in the tmck tank and the receiving tank. Contamination at the thousand ppm level may create hazards (5-1.4.3 and 5-2.5.4). Solids containing upward of about 0.2 wt% flammable solvent need to be evaluated for flammable vapor formation in containers (6-1.3.2). 

The flash point represents the minimum temperature at whieh an ignitable mixture exists above a liquid surfaee. By definition, flash points are inapplieable to gases. Some solids, e.g. naphtlialene and eamphor, are easily volatilized on heating so that flammable mixtures develop above the solid surfaee and henee flash points ean be determined. (However, although these substanees ean be ignited, they generally need to be heated above their flash points in order for eombustion to be sustained this is the fire point .)... 

Fire Hazards - Flash Point Not pertinent (combustible solid) Flammable Limits in Air (%) Not pertinent Fire Extinguishing Agents Water, foam Fire Extinguishing Agents Not To Be Used Not pertinent Special Hazards of Combustion Products Toxic oxides of nitrogen may be formed in a fire Behavior in Fire Not pertinent Ignition Temperature Not pertinent Electrical Hazard Not pertinent Burning Rate Not pertinent. 

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